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Homework Help: Determine ia and Vo

  1. Sep 18, 2012 #1
    1. The problem statement, all variables and given/known data
    Determine ia and Vo

    V=0.4 V, R1 = 7kΩ, R2 = 28 kΩ, R3 = 43 kΩ, R4 = 31 kΩ

    2. Relevant equations

    V= i*R

    3. The attempt at a solution

    Does R5 and R 6 cancel out since the pair of parallel resistors share a common node, making Vo - 0 V?
  2. jcsd
  3. Sep 18, 2012 #2


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    Homework Helper
    Gold Member

    They don't "cancel out" (weak terminology). There is no current going through them so no voltage drop across them. Better to say that their values are not relevant to the solution of the problem. Vo is not 0V. You have 2 voltage dividers-- evaluate the midpoint voltage of both of them.
    Last edited: Sep 18, 2012
  4. Sep 18, 2012 #3
    Thank you.
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